Bash Shell

CheeSen · 09-07-2008, 02:09 AM

how to match a keyword to search into the text txt.
Example :

i enter a keyword "GO"
then system return keyword not found in text.txt
if i enter keyword "PLAY" which has in text.txt
then it will show
PLAY on the screen

how to do that ? using sed? awk ?

Nylex · 09-07-2008, 02:15 AM

I suppose a simple way would be to use grep and then test the return value (which is stored in $? and is 1 if the string isn't found and 0 if it is). This may not be the best way, but it's one way to do it.

Edit: also, you really could have used a more descriptive thread title.

Nylex · 09-07-2008, 02:33 AM

Actually, I just looked at the Advanced Bash-Scripting Guide page on Test Constructs and you don't need to explicitly use $?, because Bash checks it automatically when you do "if command ...".